A systematic review of Bruchid resistance in common bean: Genetic mechanisms and breeding implications for Africa

Vista sencilla de ítem
dc.creatorChikasha, Tatenda Ephraim
dc.creatorChiulele, Rogério Marcos
dc.creatorNkhata, Wilson
dc.creatorMuatinte, Bernardo Lázaro
dc.creatorSantos, Luisa
dc.date2026-02-24
dc.date2026-05-27T13:16:37Z
dc.date.accessioned2026-06-27T13:22:16Z
dc.descriptionBackground: Bruchids (Acanthoscelides obtectus and Zabrotes subfasciatus) are responsible for severe post-harvest losses in common bean (Phaseolus vulgaris L.). Understanding the genetic mechanisms and molecular markers of resistance is critical for breeding durable cultivars, especially in Africa. Methods: This systematic review followed PRISMA guidelines. The protocol was registered on OSF before implementation. Ten databases and repositories were searched for peer-reviewed and gray literature evaluating cultivars, landraces, wild derivatives, or interspecific lines. Eligible studies reported genetic mechanisms, molecular markers, or breeding strategies for bruchid resistance. Results: Twenty-nine studies met inclusion criteria. Most identified resistance at the APA locus on chromosome Pv04, involving arcelins, phytohemagglutinin, and α-amylase inhibitors, which confer strong antibiosis. Additional loci on Pv03 and Pv07, together with seed-coat traits, contributed complementary non-APA resistance. Validated protein markers and SNPs linked to these loci were reported. Breeding approaches included backcrossing and interspecific introgression. Conclusions: Marker-assisted selection offers opportunities to pyramid multiple resistance genes into farmer-preferred germplasm. However, progress is constrained by limited germplasm diversity, inconsistent bioassays, and poor characterization of non-APA mechanisms. Greater emphasis on diverse African germplasm and standardized assays is needed to accelerate the breeding of resistant cultivars.
dc.formatapplication/pdf
dc.identifierhttps://hdl.handle.net/10568/183082
dc.identifier.urihttp://hdl.handle.net/123456789/57266
dc.languageen
dc.publisherMDPI
dc.rightsOpen Access
dc.sourceChikasha, T.E.; Chiulele, R.M.; Nkhata, W.; Muatinte, B.L.; Santos, L. (2026) A systematic review of Bruchid resistance in common bean: Genetic mechanisms and breeding implications for Africa. Agronomy 16(5): 491. ISSN: 2073-4395
dc.subjectphaseolus vulgaris
dc.subjectresistance genes
dc.subjectgenome-wide association studies
dc.subjectantibiosis
dc.subjectacanthoscelides obtectus
dc.subjectzabrotes subfasciatus
dc.subjectapa
dc.subjecttesta
dc.subjectbruchidius
dc.titleA systematic review of Bruchid resistance in common bean: Genetic mechanisms and breeding implications for Africa
dc.typeJournal Article

Archivos

Colecciones

Alianza Bioversity International y CIAT